Error codes Mercedes Atego MTCO unit (Mechanical Tachograph)

Mercedes-Benz

A tachograph is a vehicle-mounted device that automatically records the driver’s activity, as well as its speed and distance, selected from the selected mode. The driving mode is automatically activated when the vehicle is moving, and modern tachograph heads usually default to other working modes when stopped. The remaining modes and availability modes can be manually selected by the driver at rest.

Mercedes Fault Code	Fault Code Meaning
TCO 0000	The positioning of the tachograms is violated.
TCO 0004	Power failure
TCO 1000	CAN malfunction
TCO 1100	CAN malfunction
TCO 1200	Internal error
TCO 1400	Tachograph calibration is incorrect.
TCO 1500	Malfunction in the control panel
TCO 1600	Malfunction in the control panel
TCO 1704	CAN connection to INS (instrument cluster) malfunctioning
TCO 3408	Malfunction of the speed sensor
TCO 3504	Malfunction of the speed sensor
TCO 4804	Malfunction of the speed output
TCO 8000	Driving without a tachogram
TCO 8100	Driver 1 tachogram missing.
TCO 8200	Driver 2 tachogram missing.
TCO 8300	Synchronization could not be started.
TCO 9000	Positioning of tachograms is broken.
TCO 9600	The functioning of the drawer is broken.
TCO 9700	Faulty speed registration
TCO 9800	Faulty recording system
TCO 9900	Faulty recording system